class Bird(object):
    have_feature = True
    def move(self, x, y):
        position = [0, 0]
        position[0] = position[0] + x
        position[1] = position[1] + y
        return position


# bird1 = Bird()
# print(bird1.have_feature)
# print(bird1.move(1, 2))
class happyBird(Bird):
    def __init__(self,more_words):
        print('we are happy birds', more_words)


happy_bird1 = happyBird('Happy! Happy!')
print(happyBird.have_feature)
